Railway truck



July 16, 1940. Q K KJQLSETH 2,208,424

RAILWAY TRUCK Filed Jan. 19, 1939` 2 Sheets-Sheet 1 Ole Kljolseth, by M4/'M1 His Attorney.

July 16, 1940. Q K KJOLSETH 2,208,424

RAILWAY TRUCK Filed Jan. 19, 1939 2 Sheets-Sheet'Z FiA.

` Inventor:

.az l Ole K. Kjolseth,

by His Attorney.

'PatentedJlllyl161-940' f i UNITED ,s'rA'rEs J P'AraNr y ori-*lcs v amm.' 'I nmwnr'mucx on 1;.- xioneth, une, ra., anni to General' Electr-ie Company, a '9o tion of New York spontanen January 1s, 11339,' serial No. mais* 4 claims.' (c1. 1ns'191.z)

My invention relates to trucks for railway veon each side of the side frame to limit the relahicles. f tive movement therebetween'. The openings 24 An object of my invention is toprovide an imare former as upwardly extending slots, and also proved railway truck and bolster supporting arare wider than the diameter of the bolts 23, so as 5 rangement for such a truck. to permit a predetermined limited free relative 5 .Further objects and advantages of `my invenvertical and longitudinal movement between the tion become apparent and my invention ,will side frames, and the bolste l be better understood from the following descrip- In order to su' rt resiliently the 'bolster I1,

tion referring to the accompanying drawings, and the vside frames I2 are formed with spring seats l the features of novelty which characterizemyin- 25 on -which a plurality of coil springs 26 are i0 vention'will be pointed outwith particularity in seated with the upper ends thereof in engagethe claims annexed to and forming part of this ment with the under side of the longitudinally specification. extending members I9 of the bolster. This pro- Referring'to the drawings, Fig. 1 is a side elevides an arrangement for resiliently transmitl vation of a truck embodying'my-invention, partly ting vertical forces between the bolster and the ll broken away to show the supporting arrangetruck side frames. ment; Fig. 2 is a plan view of the ytruck shown Tractive and other longitudinal forces are in Fig. 1, partly broken away to illustrate the transmitted between the bolster and the side relative arrangement of the side frames and the frames on each side of the truck through a loncooperating bolster elements; Fig. ,3 is a view gitudinaliy extending link member 21, which is so taken along line 3--3 of Fig. 2; Fig. 4 is a side plvotally secured to the bolster by a pivot pin elevational view, partly in section, illustrating 21' rotatably mounted on bosses 28 and 29 and another embodiment of my invention; Fig. 5 is pivotallysecured at the other end thereof to the a plan view of the truck shown in Fig. 4, partly. side frame by a pivot pin 3|) rotatably mounted 25 broken away to show the relative arrangement in ears 3I secured to the side frame I2. These g5 ofthe side frames and cooperating bolster elepivotally secured links 21 allow a predetermined ments; and Fig. 6 is an end view, partly in secamount of relative vertical movement between the tion, taken along line 6-6 of Fig. 5'. bolster I1 and the side frames I2, while provid- Referring to the drawings, I have shown a truck ing a rigid longitudin connection between these for railway vehicles having a pair of wheels I0 members. In this'manner I provide a simple .3 0

' t0 'support longitudinally extending side frames mission of lateral. longitudinal. and vertical i2. These side fram are arranged as equalizers forces between the truck bolster and the side extending between the axles on each sideof the frames with a minimum number of parts, and

3;, truck with each vend thereof secured by bolts' I3 thereby provide an improved strong and light- 35 to ilanges Il formed on the sides of a journal weight railway truck construction.

box I5 arranged about an axle journal bearing In Figs. 4, 5,. 'd 6, Ihave shown another em- IB. A bolster I1 extends transversely between bodiment of my invention provided with the the two side frames I2 andisprovided with a censame general improved features as the truck 4o ter bearing plate I8 for supporting a railway veshown in Figs. 1, 2, and 3, and of slightly heavier o hicle on the truck. Each end of the bolster I1 is construction for use whereit is deemed advisable provided with a longitudinally extending portion .to employ a more heavy duty truck. This truck I9, which is bifurcated at the ends and formed is provided with pairs of wheels 32 mounted on with downwardly extending arms 20 arranged `each of a pair 4of axles 33 arranged t0 SUDDGY" 4,-, about the side frames l2. Upwardly extending longitudinally extending side frames 34. 'I'hese o bearing plates 2l` are provided on each side of side frames are arranged as equalizers extendingY the side frames adjacent the journal boxes I5, on each side between the axles and are provided and thebolster arms 2IIl are provided with bearwith journal boxes 35 at the ends thereof. These y ings 22 arranged t0 engage these bearing plates journal boxes extend about bearings supported no' 2l to transmit only lateral forces between the on the ends of the axles 33 and are arranged so 1 bolster and the Side frames. Such an arrnngethat a slight amount of relative vertical displacement provides for free relative vertical movement ment may take place between the axles 33 0n the between the bolster and the side frames. Ilocktwo ends of the truck, A bolster 36 extends ing bolts 23 extend through openings 24 in the transversely between the two side frames 3l and side frames I2`and secure together the arms 20 isprovided with a center bearing plate 31 for M supporting a railway vehicle on the truck. Each end of 'the bolster 31 is providedwith ya longitudinally extending portion 38 formed with downwardly extending arms 39 which, project into openings 40 formed in the ends of the side frames 34 'adjacent the journal boxes 35. Upwardly extending bearings 4l are provided on each side of the openings 40 in the side frames adjacent the arms 39, and these bolster arms 39 are provided with complementary bearings 4Z arranged to engage the bearings 4I to transmitlateral forces between the bolster and the side frames. A bearing 43 also is formed on the journal box 35 adjacent thearms 39 and is adapted to engage the end surface of the arms tudinal forces between these arms and the journal boxes as the bolster moves Ilongitudinally with respect to the side frames and these surfaces contact one another.` it

In order to support resillently the bolster 36, the side frames '34 are formed with spring seats 44 on which a seated with the upper ends thereof in engagement with spring seats 46 yformed on the under side of the longitudinally extending members 38 'of the bolster. The bolster 36 is loosely secured to the side frames 34 on each side thereof by abolt 41 which extehdsthrough an 'opening in eachof these members, and a nut 48 is threaded on the end of the bolt `41 and spaced from the lower side of the spring seat'44 on the sideframes so as to allow a predetermined amount of relative vertical movement' between the side frames'34 and the bolster 36 and tolimit such vertical movement to safe operating values. This provides an arrangement for resiliently transmitting vertical forces between the bolster andthe truck side frames. c

Tractive and other longitudinal forces are transmitted between' the bolster and the side frames on each side of the truck through a longitudinally extending link member `49, which is pivotally secured tothe bolsterby a pivot pin 5U in ears 5| formed on the`- rotatably mounted bolster, and whichis pivotally secured `at the other end thereof to the side frame 34 by a pivot pin 52 rotatably mounted in ears 53 -formed onv the side frame. This pair of pivotally secured links 49 allows a predetermined amount of relative vertical movement between the bolster 36 and the side frames 34, while providing a rigid longitudinal connection between these members.` i In this manner I provide a simple and rugged truck construction which provides for the transmission of lateral, longitudinal, and` vertical forces between the truck bolster andthe side frames and utilizes a minimum number of parts, thereby providing a strong and relatively lightweight railway truck construction. Y

While I have illustrated and describedparticulai` embodiments of my invention," modications thereof will occur to those `.skilled in the art. I desire it to be understood, therefore, thatmyv invention is not to be limited to the particular arrangements disclosed, andy kI vintend in the appended claims to cover -al1 modifications which do not depart from the spirit and scope of my invention.

39 to transmit longiplurality of coil springs are adapted to `engage said V:astma-1.24

truck for supporting a railway vehicle thereon an yintegrally formed pair of downwardly extending arms arranged: on eachside of said side frames adjacent each end thereof and adjacent said upwardly extending side frame bearings and adapted to engage said bearings for transmitting only lateral forces between said bolster and said side frames, means including `a longitudinally extending member pivotally connected to said bolster and one of said. side frames for transmitting longitudinal forces therebetween, andy means for resiliently supporting said bolster on said side frames.

3. A railway truck having an axle, side frames l supported on said axle, said side frames having upwardly extending openings therein adjacent each end thereof, oppositely disposed upwardly extending bearings arranged on said side frames in said upwardly extending openings, means including a bolster extending transversely of said rtruck for supporting a railway vehicle thereon and having downwardly extending arms arranged adjacent said upwardly extending side frame bearings and adapted to bearings for transmitting only lateral forces between said bolster and said side frames, means including a longitudinally extending member pivotally connected to said bolster and oneof said side frames for transmitting longitudinal forces therebetween, and means for resiliently supporting said bolster on said side frames.

4. A railway truck having side frames provided with oppositely disposed upwardly vextending bearings arranged thereon adjacent each end ther-coa bolster extending transversely of said truckand having longitudinally extending members with downwardly extending arms adjacent each end thereof, means including oppositely disposed bearingsonsald arms arranged adiacent said upwardly extending side frame bearings and side frame bearings for transmitting only lateral forces .between 'said bolster and said side frames, resilient meansfor supporting said bolster ber on each side of said truck pivotally connected to said bolster and the side frameon the same side of the truck as said member for transmittinglongitudinal forces therebetween.

OLE K. KJOLSETLL engage said side frame on said side frames, means including a longitudinally extending memf 

